21067940

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{6089}}^1$

素因数の和:6271

約数の個数: 24

約数和(自身を含む): 44505720

約数和(自身を除く): 23437780

約数列:

[1, 2, 4, 5, 10, 20, 173, 346, 692, 865, 1730, 3460, 6089, 12178, 24356, 30445, 60890, 121780, 1053397, 2106794, 4213588, 5266985, 10533970, 21067940]

約数ペア:

[(1, 21067940), (2, 10533970), (4, 5266985), (5, 4213588), (10, 2106794), (20, 1053397), (173, 121780), (346, 60890), (692, 30445), (865, 24356), (1730, 12178), (3460, 6089)]